... spawning, and breeding habitats to hundreds of species of birds, recreational and commercial fish and shellfish, and threatened and endangered species such as manatees, sea turtles, and Gulf ... intensity of sewage overflows and sewage treatment bypasses. The EPA’s Office of Research and Development is currently assessing the potential impacts of climate change on the frequency and size of ... 900,000 cases of illness and as many as 900 deaths as a result of waterborne microbial infections;137,138 and • 500,000 cases of illness per year attributed to microbial contamination of drinking...